1 files changed, 132 insertions, 0 deletions
diff --git a/test/parallel/test-source-map.js b/test/parallel/test-source-map.js
new file mode 100644
index 0000000000..de728c05bf
--- /dev/null
+++ b/test/parallel/test-source-map.js
@@ -0,0 +1,132 @@
+'use strict';
+
+if (!process.features.inspector) return;
+
+const common = require('../common');
+const assert = require('assert');
+const { dirname } = require('path');
+const fs = require('fs');
+const path = require('path');
+const { spawnSync } = require('child_process');
+
+const tmpdir = require('../common/tmpdir');
+tmpdir.refresh();
+
+let dirc = 0;
+function nextdir() {
+  return process.env.NODE_V8_COVERAGE ||
+    path.join(tmpdir.path, `source_map_${++dirc}`);
+}
+
+// Outputs source maps when event loop is drained, with no async logic.
+{
+  const coverageDirectory = nextdir();
+  const output = spawnSync(process.execPath, [
+    require.resolve('../fixtures/source-map/basic')
+  ], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
+  if (output.status !== 0) {
+    console.log(output.stderr.toString());
+  }
+  assert.strictEqual(output.status, 0);
+  assert.strictEqual(output.stderr.toString(), '');
+  const sourceMap = getSourceMapFromCache('basic.js', coverageDirectory);
+  assert.strictEqual(sourceMap.url, 'https://http.cat/418');
+}
+
+// Outputs source maps when process.kill(process.pid, "SIGINT"); exits process.
+{
+  const coverageDirectory = nextdir();
+  const output = spawnSync(process.execPath, [
+    require.resolve('../fixtures/source-map/sigint')
+  ], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
+  if (!common.isWindows) {
+    if (output.signal !== 'SIGINT') {
+      console.log(output.stderr.toString());
+    }
+    assert.strictEqual(output.signal, 'SIGINT');
+  }
+  assert.strictEqual(output.stderr.toString(), '');
+  const sourceMap = getSourceMapFromCache('sigint.js', coverageDirectory);
+  assert.strictEqual(sourceMap.url, 'https://http.cat/402');
+}
+
+// Outputs source maps when source-file calls process.exit(1).
+{
+  const coverageDirectory = nextdir();
+  const output = spawnSync(process.execPath, [
+    require.resolve('../fixtures/source-map/exit-1')
+  ], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
+  assert.strictEqual(output.stderr.toString(), '');
+  const sourceMap = getSourceMapFromCache('exit-1.js', coverageDirectory);
+  assert.strictEqual(sourceMap.url, 'https://http.cat/404');
+}
+
+// Outputs source-maps for esm module.
+{
+  const coverageDirectory = nextdir();
+  const output = spawnSync(process.execPath, [
+    '--no-warnings',
+    '--experimental-modules',
+    require.resolve('../fixtures/source-map/esm-basic.mjs')
+  ], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
+  assert.strictEqual(output.stderr.toString(), '');
+  const sourceMap = getSourceMapFromCache('esm-basic.mjs', coverageDirectory);
+  assert.strictEqual(sourceMap.url, 'https://http.cat/405');
+}
+
+// Loads source-maps with relative path from .map file on disk.
+{
+  const coverageDirectory = nextdir();
+  const output = spawnSync(process.execPath, [
+    require.resolve('../fixtures/source-map/disk-relative-path')
+  ], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
+  assert.strictEqual(output.status, 0);
+  assert.strictEqual(output.stderr.toString(), '');
+  const sourceMap = getSourceMapFromCache(
+    'disk-relative-path.js',
+    coverageDirectory
+  );
+  // Source-map should have been loaded from disk and sources should have been
+  // rewritten, such that they're absolute paths.
+  assert.strictEqual(
+    dirname(
+      `file://${require.resolve('../fixtures/source-map/disk-relative-path')}`),
+    dirname(sourceMap.data.sources[0])
+  );
+}
+
+// Loads source-maps from inline data URL.
+{
+  const coverageDirectory = nextdir();
+  const output = spawnSync(process.execPath, [
+    require.resolve('../fixtures/source-map/inline-base64.js')
+  ], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
+  assert.strictEqual(output.status, 0);
+  assert.strictEqual(output.stderr.toString(), '');
+  const sourceMap = getSourceMapFromCache(
+    'inline-base64.js',
+    coverageDirectory
+  );
+  // base64 JSON should have been decoded, and paths to sources should have
+  // been rewritten such that they're absolute:
+  assert.strictEqual(
+    dirname(
+      `file://${require.resolve('../fixtures/source-map/inline-base64')}`),
+    dirname(sourceMap.data.sources[0])
+  );
+}
+
+function getSourceMapFromCache(fixtureFile, coverageDirectory) {
+  const jsonFiles = fs.readdirSync(coverageDirectory);
+  for (const jsonFile of jsonFiles) {
+    const maybeSourceMapCache = require(
+      path.join(coverageDirectory, jsonFile)
+    )['source-map-cache'] || {};
+    const keys = Object.keys(maybeSourceMapCache);
+    for (const key of keys) {
+      if (key.includes(fixtureFile)) {
+        return maybeSourceMapCache[key];
+      }
+    }
+  }
+}